Do you grease the axle before you put the tracknuts on? You need to reduce friction in the tracknut threads and increase friction between the hub locknuts and the inside faces of the droputs (/trackends). Using a centre-punch to put some pattern on the inside face of the dropouts might help too.
Do you grease the axle before you put the tracknuts on? You need to reduce friction in the tracknut threads and increase friction between the hub locknuts and the inside faces of the droputs (/trackends). Using a centre-punch to put some pattern on the inside face of the dropouts might help too.